Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865113 | Countergravity casting apparatus and process for casting thin-walled parts | James B. Mercer, Gary F. Ruff | 1989-09-12 |
| 4825933 | Countergravity casting apparatus | James B. Mercer | 1989-05-02 |
| 4809767 | Countergravity casting apparatus | James B. Mercer, Anthony C. Greanias | 1989-03-07 |